Reuse transaction-name cache across instances of the same interface.

Currently every binder object stores its own mapping of transaction
codes to names.

This is OK for services but may be wasteful for things like callback
classes for which we can have many instances.

Also change the default getMaxTransactionId to be -1, as 0 is the
value for an interface with one method. There may be up to 50
interfaces in system_server for which we incorrectly assume that
they are user defined and allocate 1024 entries (wasting hundreds of
KB).

Bug: 330738126
Test: AidlTest
Flag: android.os.binder_cache_transaction_trace_names
Change-Id: I2b960c2a9f0f325e6d99bb0d15999997dbea81e2